A Review of Hydrogen Direct Injection for Internal Combustion Engines: Towards Carbon-Free Combustion
Source abstract
Abstract
A paradigm shift towards the utilization of carbon-neutral and low emission fuels is necessary in the internal combustion engine industry to fulfil the carbon emission goals and future legislation requirements in many countries. Hydrogen as an energy carrier and main fuel is a promising option due to its carbon-free content, wide flammability limits and fast flame speeds. For spark-ignited internal combustion engines, utilizing hydrogen direct injection has been proven to achieve high engine power output and efficiency with low emissions. This review provides an overview of the current development and understanding of hydrogen use in internal combustion engines that are usually spark ignited, under various engine operation modes and strategies. This paper then proceeds to outline the gaps in current knowledge, along with better potential strategies and technologies that could be adopted for hydrogen direct injection in the context of compression-ignition engine applications—topics that have not yet been extensively explored to date with hydrogen but have shown advantages with compressed natural gas.
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Research context
OpenAlex topics: Advanced Combustion Engine Technologies · Biodiesel Production and Applications · Combustion and flame dynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney 2052, Australia
School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney 2052, Australia
School of Mechanical Engineering, The University of Adelaide, Adelaide 5005, Australia
Funding
Australian Renewable Energy Agency · Australian Research Council
References (100+)
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